2-3/4", Hybrid Grout & Tile Blade, Hybrid Design Combines A 1/8" Kerf Grout Blade With A Delta Rasp For Grout Removal & Thinnest Grinding Into The Same Blade, Teardrop Shape Allows For Easy Corner Work For Grout & Thinnest Removal, Superior Braised Carbide Fully Covers The Blade Ensures Longest Usable Life Of Blade.